XMM-Newton, NuSTAR and Swift follow-up of the new outburst of the magnetar XTE J1810-197
ATel #12600; Nanda Rea (CSIC-IEEC, Barcelona, ES), Alice Borghese (U. Amsterdam, NL), Francesco Coti Zelati (CSIC-IEEC, Barcelona, ES), on behalf of a larger collaboration
on 20 Mar 2019; 10:35 UT
Credential Certification: Nanda Rea (rea@ice.csic.es)
Subjects: X-ray, Magnetar
Referred to by ATel #: 12689
Following the recent outburst of the magnetar XTE J1810-197 in radio and X-rays (ATels #12284, #12285, #12288, #12291, #12297, #12484; Gotthelf et al. 2019, arXiv:1902.08358; Dai et al. 2019, arXiv:1902.04689; Levin et al. 2019, arXiv: 1903.02660), we have activated our XMM-Newton and NuSTAR monitoring programs for magnetar outbursts, and we are observing it with Swift.
The source is still very bright, and it was already observed four times by NuSTAR, one by XMM-Newton and seven times by Swift. The latest XMM-Newton and NuSTAR simultaneous observations (March 3rd and 4th) found the source at a 0.3-10keV flux of 1.23(1)e-10 erg/s/cm2, with a spectrum well fitted by two absorbed blackbodies with temperatures of 0.21(3) and 0.67(1) keV .
We will continue monitoring the outburst decay of XTE J1810-197 with XMM-Newton, NuSTAR and Swift in the following months. Multi-band follow-up observations, especially in the low-frequency bands, and simultaneous
with the X-ray observations are strongly encouraged. Please contact us if you are interested in the exact schedule of the next X-ray observations.